The transition between order and chaos is studied in the warm rotating nucleus 174W by gamma-spectroscopy, focusing on the conservation of selection rules of the K quantum number with the excitation energy. The 174W nucleus was populated at high spins by the fusion-evaporation reaction of 50Ti (at 217MeV) on a 128Te backed target. The experiment was performed in Legnaro National Labo- ratory using the AGATA Demonstrator HPGe-array (AD) coupled with an array of 27 BaF2 scintillator detectors. High-energy γ-rays measured in the AD and in the scintillators array will be also analyzed to study the Giant Dipole Resonance (GDR) in the compound nucleus 178W. The discrimination between n and γ in the AD detectors will be employed, following a procedure recently developed by Monte Carlo simulations and using digital Pulse Shape Analysis timing techniques.
Order-to-chaos transition in warm rotating W-174 nuclei / V. Vandone, S. Leoni, A. Bracco, S. Bottoni, F. Camera, A. Corsi, F.C.L. Crespi, A. Giaz, R. Nicolini, G. Benzoni, N. Blasi, C. Boiano, S. Brambilla, B. Million, O. Wieland, D. Bortolato, E. Calore, A. Gottardo, D.R. Napoli, E. Sahin, J.J. Valiente Dobon, D. Bazzacco, M. Bellato, E. Farnea, S. Lunardi, D. Mengoni, C. Michelagnoli, D. Montanari, F. Recchia, C.A. Ur, A. Gadea, T. Hüyük, N. Cieplicka, A. Maj, M. Kmiecik, A. Atac, S. Akkoyun, A. Kaskas, S. Ketenci, J. Nyberg, P.A. Söderström (PROCEEDINGS OF THE INTERNATIONAL SCHOOL OF PHYSICS "ENRICO FERMI"). - In: From the Big Bang to the Nucleosynthesis / [a cura di] A. Bracco, E. Nappi. - [s.l] : IOS, 2011. - ISBN 9781607509738. - pp. 427-430 (( Intervento presentato al 178. convegno Course of the International School of Physics Enrico Fermi on From the Big Bang to the Nucleosynthesis tenutosi a Varenna nel 2010.
Order-to-chaos transition in warm rotating W-174 nuclei
V. VandonePrimo
;S. LeoniSecondo
;A. Bracco;S. Bottoni;F. Camera;A. Corsi;F.C.L. Crespi;A. Giaz;R. Nicolini;
2011
Abstract
The transition between order and chaos is studied in the warm rotating nucleus 174W by gamma-spectroscopy, focusing on the conservation of selection rules of the K quantum number with the excitation energy. The 174W nucleus was populated at high spins by the fusion-evaporation reaction of 50Ti (at 217MeV) on a 128Te backed target. The experiment was performed in Legnaro National Labo- ratory using the AGATA Demonstrator HPGe-array (AD) coupled with an array of 27 BaF2 scintillator detectors. High-energy γ-rays measured in the AD and in the scintillators array will be also analyzed to study the Giant Dipole Resonance (GDR) in the compound nucleus 178W. The discrimination between n and γ in the AD detectors will be employed, following a procedure recently developed by Monte Carlo simulations and using digital Pulse Shape Analysis timing techniques.
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